Rubiaceae
Rytigynia

Rytigynia hirsutiflora Verdc.

First published in Kew Bull. 42: 183 (1987)
This species is accepted
The native range of this species is Tanzania (Uzungwa Mountains). It is a shrub and grows primarily in the seasonally dry tropical biome.

Descriptions

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/35480/9930534

Conservation
VU - vulnerable
[IUCN]

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: threatened. Confidence: confident
[AERP]

Rubiaceae, B. Verdcourt. Flora of Tropical East Africa. 1976

Morphology General Habit
Shrub or small tree to 3 m.; young branches with dense short yellow hairs but soon merely pubescent or glabrescent; internodes often congested.
Morphology Leaves
Leaf-blades oblong or ± elliptic, 2–8 cm. long, 1–3.7 cm. wide, acuminate at the apex, cuneate to rounded at the base, slightly discolorous, densely yellow hairy when young but eventually pubescent mostly only on the nerves; domatia small, hidden by hairs on midrib; petiole 3–5 mm. long; stipule-sheath ± 2 mm. long, pubescent, with pubescent subulate appendages 4–6 mm. long.
Morphology Reproductive morphology Flowers
Flowers solitary; pedicels 2 mm. long, slightly accrescent in fruit to ± 5 mm.
Morphology Reproductive morphology Flowers Calyx
Calyx hairy; tube obconic, 1.5 mm. long; lobes ± 10, linear-triangular, 1–2.5 mm. long, shortly densely pilose.
Morphology General Buds
Buds with divaricate tails.
Morphology Reproductive morphology Flowers Corolla
Corolla white, hairy; tube campanulate, ± 2.5 mm. long, inside at throat with sparse deflexed hairs, otherwise glabrous; lobes oblong-elliptic, 4 mm. long, 2 mm. wide, with subulate subapical oblique slightly curved setulose-pilosulose appendages 3 mm. long.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary 2-locular; style 4 mm. long; stigmatic club subglobose, 1.2 mm. in diameter, sulcate basally, bilobed at apex.
Morphology Reproductive morphology Fruits
Fruits (only 1-seeded ones seen) narrowly obovoid-ellipsoid, 10 mm. long, 4–5 mm. wide, sparsely pubescent.
Habitat
Evergreen forest; 1100–1400 m.
Distribution
not known elsewhere T7
[FTEA]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0